import Vue from 'vue'
import Router from 'vue-router'

Vue.use(Router)

/* Layout */
import Layout from '@/layout'

const courseList = r => require.ensure([], () => r(require('@/views/courseManage/courseList/index')), 'courseList');
const courseAdd = r => require.ensure([], () => r(require('@/views/courseManage/courseAdd/index')), 'courseAdd');
const courseVideo = r => require.ensure([], () => r(require('@/views/courseManage/courseVideo/index')), 'courseVideo');
const bannerList = r => require.ensure([], () => r(require('@/views/bannerManage/bannerList/index')), 'bannerList');
const userList = r => require.ensure([], () => r(require('@/views/userManage/userList/index')), 'userList');
const userDetail = r => require.ensure([], () => r(require('@/views/userManage/userDetail/index')), 'userDetail');


/**
 * Note: sub-menu only appear when route children.length >= 1
 * Detail see: https://panjiachen.github.io/vue-element-admin-site/guide/essentials/router-and-nav.html
 *
 * hidden: true                   if set true, item will not show in the sidebar(default is false)
 * alwaysShow: true               if set true, will always show the root menu
 *                                if not set alwaysShow, when item has more than one children route,
 *                                it will becomes nested mode, otherwise not show the root menu
 * redirect: noRedirect           if set noRedirect will no redirect in the breadcrumb
 * name:'router-name'             the name is used by <keep-alive> (must set!!!)
 * meta : {
    roles: ['admin','editor']    control the page roles (you can set multiple roles)
    title: 'title'               the name show in sidebar and breadcrumb (recommend set)
    icon: 'svg-name'/'el-icon-x' the icon show in the sidebar
    breadcrumb: false            if set false, the item will hidden in breadcrumb(default is true)
    activeMenu: '/example/list'  if set path, the sidebar will highlight the path you set
  }
 */

/**
 * constantRoutes
 * a base page that does not have permission requirements
 * all roles can be accessed
 */
export const constantRoutes = [{
    path: '/login',
    component: () => import('@/views/login/index'),
    hidden: true
  },

  {
    path: '/404',
    component: () => import('@/views/404'),
    hidden: true
  },

  {
    path: '/',
    component: Layout,
    redirect: '/courselist',
    meta: {
      title: '课程管理',
      icon: 'el-icon-s-claim'
    },
    name: 'courseList',
    children: [{
      path: 'courselist',
      name: 'courselist',
      component: courseList,
      meta: {
        title: '课程列表',
      }
    }, {
      path: 'courseadd',
      name: 'courseadd',
      hidden: true,
      component: courseAdd,
      meta: {
        title: '添加课程',
      }
    },{
      path: 'courseVideo',
      name: 'courseVideo',
      hidden: true,
      component: courseVideo,
      meta: {
        title: '视频管理',
      }
    }]
  },

  {
    path: '/bannerManage',
    component: Layout,
    redirect: '/bannerManage/bannerlist',
    name: 'bannerManage',
    meta: {
      title: 'banner管理',
      icon: 'el-icon-picture'
    },
    children: [{
      path: 'bannerlist',
      name: 'bannerlist',
      component: bannerList,
      meta: {
        title: 'banner列表',
      }
    }, ]
  },

  {
    path: '/userList',
    component: Layout,
    redirect: '/userList/userlist',
    meta: {
      title: '用户管理',
      icon: 'el-icon-user-solid'
    },
    name: 'userList',
    children: [{
      path: 'userlist',
      name: 'userlist',
      component: userList,
      meta: {
        title: '用户列表',
      }
    }, {
      path: 'userdetail',
      name: 'userdetail',
      hidden: true,
      component: userDetail,
      meta: {
        title: '用户详情',
      }
    }]
  },

  // 404 page must be placed at the end !!!
  {
    path: '*',
    redirect: '/404',
    hidden: true
  }
]

const createRouter = () => new Router({
  // mode: 'history', // require service support
  scrollBehavior: () => ({
    y: 0
  }),
  routes: constantRoutes
})

const router = createRouter()

// Detail see: https://github.com/vuejs/vue-router/issues/1234#issuecomment-357941465
export function resetRouter() {
  const newRouter = createRouter()
  router.matcher = newRouter.matcher // reset router
}

export default router
